entomopathogenic fungus (Table 3; Fig. 5). Corroborating
with our findings, a previous study has demonstrated that
high viscosity media tend to adhere to the flask wall, thus
increasing oxygen transfer by increasing the surface area of
the medium (Giese et al. 2013). We also noticed that high
glucose concentrations with high aeration rates led to a less
filamentous growth accompanied by lower medium viscosity
and higher blastospore yields than glucose/oxygenlimited
cultures (viscosity data not shown). Previous studies
have linked yeast-like rather than hyphal growth to improved
oxygen transfer capacity in fungal cultures (Issaly
et al. 2005; Jackson 2012; Peter et al. 2004). Our results
demonstrated that enhanced dissolved oxygen levels induced
by high glucose concentrations facilitate the rapid
production of blastospores by cultures of B. bassiana